Review and Comprehensive Analysis of Deaggregation and Separation Methods for Asphaltene Aggregates

作者：Cai Xinheng,Long Jun,Dong Ming,Wang Wei,Hou Huandi,Tian Songbai

摘要：Asphaltenes generally exist in the form of molecular aggregates in crude oil or in petroleum residues,and asphaltene aggregates can usually cause serious problems to oil exploitation,transportation,and processing.Achieving deaggregation and separation of asphaltene aggregates is a premise and basis for molecular characterization and processing of heavy oils.Aiming at the intermolecular interactions in asphaltene molecular aggregates,it has proposed and summarized that aspahltene aggregates can be subject to deaggregation by means of five approaches,including solvent diluting,removing active sites,moderate heating,ultrasonication and on-line molecular collision.Moreover,asphaltenes can be further separated to narrow fractions for molecular-level research based on polarity difference,molecular size difference,acid-base properties,and reactivity difference.

发文机构：SINOPEC Research Institute of Petroleum Processing

关键词：ASPHALTENEMOLECULARAGGREGATESDEAGGREGATIONSEPARATION

分类号： TE6[石油与天然气工程—油气加工工程]